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  • Hot Dipped Galvanized Split Lock Washer

Regular Split Lock Washer Hot-Dipped Galvanized Plating

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Regular Split Lock Washer with Hot-Dipped Galvanized Plating – Rugged, Corrosion-Resistant Fastening You Can Rely On

When your application faces the elements, regular split lock washers with hot-dipped galvanized (HDG) plating deliver the rugged performance you need. Designed for outdoor and heavy-duty environments, these washers combine the classic mechanical locking action of a split washer with the superior corrosion resistance of a thick zinc coating.

Manufactured from medium carbon steel, these washers are heat-treated for added durability and designed to provide reliable tension in bolted assemblies. The helical split design creates spring tension under the fastener head or nut, helping resist loosening from vibration or thermal expansion. The hot-dip galvanizing process applies a heavy zinc layer that’s ideal for outdoor exposure, marine environments, and corrosive atmospheres, often outperforming standard zinc or plain finishes.

Material & Coating:

  • Material: Medium carbon steel

  • Coating: Hot-Dipped Galvanized (HDG) – heavy zinc layer provides long-term corrosion protection and is compatible with HDG bolts and nuts

Dimensions & Tolerances:

  • Available in standard inch sizes (#6 to 1-1/2") and metric sizes

  • Conforms to ASME B18.21.1 and SAE J489

  • Tolerances ensure a tight fit with standard and heavy hex bolts

Mechanical Properties:

  • Spring-like tension provides resistance to loosening under load

  • Hardness optimized for structural and outdoor applications

  • Compatible with ASTM A307, A325, and A490 bolts (HDG finish only)

Compliance:

  • Meets or exceeds ASTM F2329, ASME B18.21.1

  • Typically used in conjunction with F436 washers and structural bolts

Applications:

  • Structural steel connections

  • Outdoor construction and infrastructure

  • Utility poles and fencing

  • Agricultural and marine equipment

Choose HDG split lock washers for fastening that stands the test of time—through rain, rust, and relentless vibration. Need help pairing with galvanized hardware? Our team’s got your back.